数码相机的畸变差检测研究  

Research on the Digital Camera Distortion Calibration

作　　者：林宗坚[1] 崔红霞[2] 孙杰[1] 刘丽[3] 

机构地区：[1]中国测绘科学研究院 [2]武汉大学遥感信息工程学院,武汉市珞喻路129号430079 [3]武汉大学资源与环境科学学院,武汉市珞喻路129号430079

出　　处：《武汉大学学报（信息科学版）》2005年第2期122-125,共4页Geomatics and Information Science of Wuhan University

基　　金：国土资源部重点科技资助项目(991017)

摘　　要：提出了一种检测面阵CCD数码相机畸变差的方法。首先利用标准三维检校场测定面阵CCD数码相 机的内方位元素和系统畸变系数,然后依据投影几何中空间直线经中心投影变换后仍是直线的原理,提出了 对面阵CCD数码相机随机畸变的检测和改正方法。利用该方法对UAVRS Ⅱ系统中的面阵数码相机的畸变 进行了检校,获取了满意的结果。In this paper, an approach is presented to calibrate the distortion of CCD array digital cameras. Firstly, we use standard 3D calibration objects to determine the internal geometric and optical camera's characteristics. Secondly, according to the principle that the projection of every line in space onto the camera is still a line if a camera follows the pinhole model, we propose a new method for calibrating the random distortion with good precision. Finally, we apply the approach to the calibrating process of the digital camera of UAVRS- n system. Experiment results indicate that this kind of calibration method have reached successful test effect.

关 键 词：相机检校 畸变 附加参数 边缘检测 

分 类 号：P231.5[天文地球—摄影测量与遥感]